target/linux/layerscape/patches-5.4/809-jailhouse-0006-ivshmem-net-Improve-identification-of-resources.patch

   1 From 40985902afd8f4eb0bd7aa4238c7d458282af948 Mon Sep 17 00:00:00 2001
   2 From: Jan Kiszka <jan.kiszka@siemens.com>
   3 Date: Wed, 21 Dec 2016 08:20:18 +0100
   4 Subject: [PATCH] ivshmem-net: Improve identification of resources
   5
   6 Pass a device name consisting of driver name and PCI ID to request_irq
   7 and alloc_ordered_workqueue. This helps correlating resources with
   8 devices in case there are multiple of them.
   9
  10 Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
  11 (cherry picked from commit 43e2ff78b89cbdfaecba54601d85f3d40349a9b5)
  12 ---
  13  drivers/net/ivshmem-net.c | 10 +++++++---
  14  1 file changed, 7 insertions(+), 3 deletions(-)
  15
  16 --- a/drivers/net/ivshmem-net.c
  17 +++ b/drivers/net/ivshmem-net.c
  18 @@ -762,6 +762,7 @@ static int ivshm_net_probe(struct pci_de
  19         resource_size_t shmaddr;
  20         resource_size_t shmlen;
  21         int interrupt;
  22 +       char *device_name;
  23         void *shm;
  24         u32 ivpos;
  25         int err;
  26 @@ -814,7 +815,10 @@ static int ivshm_net_probe(struct pci_de
  27                 return -EINVAL;
  28         }
  29
  30 -       dev_info(&pdev->dev, "shared memory size %pa\n", &shmlen);
  31 +       device_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s[%s]", DRV_NAME,
  32 +                                    dev_name(&pdev->dev));
  33 +       if (!device_name)
  34 +               return -ENOMEM;
  35
  36         ndev = alloc_etherdev(sizeof(*in));
  37         if (!ndev)
  38 @@ -837,7 +841,7 @@ static int ivshm_net_probe(struct pci_de
  39         if (err)
  40                 goto err_free;
  41
  42 -       in->state_wq = alloc_ordered_workqueue(DRV_NAME, 0);
  43 +       in->state_wq = alloc_ordered_workqueue(device_name, 0);
  44         if (!in->state_wq)
  45                 goto err_free;
  46
  47 @@ -866,7 +870,7 @@ static int ivshm_net_probe(struct pci_de
  48                 in->using_msix = false;
  49         }
  50
  51 -       err = request_irq(interrupt, ivshm_net_int, 0, DRV_NAME, ndev);
  52 +       err = request_irq(interrupt, ivshm_net_int, 0, device_name, ndev);
  53         if (err)
  54                 goto err_int;
  55